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**Palf70Step** · 11-19-2021, 06:47 PM

I would think you would need the ecm to trigger it. Putting a double load onto the input of the ecm will probably alter things and effect the gauge. I am just guessing with theory, I never tried one or saw one that didn't have its own temp sensor for the fan.

11-19-2021, 06:47 PM	#2
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,644	Re: efan add I would think you would need the ecm to trigger it. Putting a double load onto the input of the ecm will probably alter things and effect the gauge. I am just guessing with theory, I never tried one or saw one that didn't have its own temp sensor for the fan. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!